Air-blowing traction integrated connector

Abstract

The utility model belongs to the technical field of optical fiber connectors, in particular to an air-blowing traction integrated connector, which comprises a pin assembly, a pre-embedded optical fiber is arranged in the pin assembly, the pin assembly comprises a pin, a pin tail handle joint and a pin tail handle sleeve which are connected in sequence, the pin tail handle sleeve is connected with a rear sleeve in a riveting manner, and the pin tail handle joint is connected with the rear sleeve in a riveting manner. A spring is arranged between the pin tail handle sleeve and the rear sleeve, a connector shell connecting piece and a traction cap connecting piece are arranged on the rear sleeve, and the rear sleeve is detachably connected with a connector shell through the connector shell connecting piece. When the part with the connector integrally penetrates through the pipe, the minimum pipe penetrating section is 4mm; and in the air-blowing type penetrating process, when the contact pin assembly collides with the pipeline, the contact pin tail handle sleeve of the contact pin assembly can extend into the through hole of the rear sleeve to compress the spring between the contact pin assembly and the rear sleeve for buffering, so that the contact pin assembly is prevented from being damaged by collision.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical fiber connector technical field especially relates to blow traction integrated connector. BACKGROUND

[0002] Optical fiber communication has become the backbone technology of modern communication network because of its high speed, large capacity, low attenuation and strong anti-interference ability. The optical fiber active connector (such as SC, LC, ST, etc.) is the key component to realize the detachable connection between optical fibers. In the numerous applications of FTTX, in order to ensure the quality and stability of signal transmission, the pipeline is often pre-buried in the construction stage to protect the optical cable and facilitate the later maintenance and upgrading. Therefore, when wiring in the later stage, the optical fiber connector often needs to pass through the pre-buried pipe and go through a complex pipeline path to reach the other end for connection. In actual application, smaller pipe diameters need to be laid to improve the laying density (or in the case of renovation, only smaller pipelines can be laid due to limited space resources), which requires the corresponding connector (or the component involved in pipe penetration) to have a smaller size to improve the pipe penetration success rate.

[0003] In the prior art, blow type and traction type are commonly used for pipe penetration, and the two methods have their own characteristics,

[0004] For example, the optical cable travels along the outer bend of the pipe wall in the blow type, and the optical cable travels along the inner bend of the pipe wall in the traction type. The actual use aims to successfully penetrate the pipe, but often faces complex pipe diameters and bend environments, and a single type of connector cannot meet the requirements. When the construction site cannot penetrate the pipe, a large amount of human and material resources will be wasted. INVENTION CONTENTS

[0005] The utility model provides a blow traction integrated connector, solves the problem of how to have a smaller size to improve the pipe penetration success rate and how to be applicable to multiple pipe penetration methods in the prior art.

[0006] The utility model provides the following technical scheme:

[0007] The blow traction integrated connector comprises a pin assembly, a pre-buried optical fiber is arranged in the pin assembly, the pin assembly comprises a pin, a pin tail handle joint and a pin tail handle sleeve connected in sequence, the pin tail handle sleeve is connected with a rear sleeve by riveting, a spring is arranged between the pin tail handle sleeve and the rear sleeve, a connector shell connecting piece and a traction cap connecting piece are arranged on the rear sleeve, the rear sleeve is detachably connected with a connector shell through the connector shell connecting piece, the rear sleeve is detachably connected with a traction cap through the traction cap connecting piece, and a compression sleeve and a tail sleeve are connected to the tail end of the rear sleeve.

[0008] In a possible implementation, a dustproof cap is arranged at the front end of the pin, and the dustproof cap is tightly connected with the pin.

[0009] In a possible implementation, the pin, the pin tail handle joint and the pin tail handle sleeve are internally provided with a through hole.

[0010] In a possible implementation, the rear sleeve is internally provided with a through hole, the rear sleeve is internally provided with a first limiting ring at the inner wall of the front end of the rear sleeve, and the pin tail handle sleeve is riveted with the through hole of the rear sleeve, so that the pin tail handle sleeve cannot be separated from the rear sleeve.

[0011] In a possible implementation, the traction cap connector comprises an annular step arranged in the middle of the outer lateral wall of the rear sleeve, and an external thread for connecting the traction cap is arranged on the annular step.

[0012] In a possible implementation, the traction cap is provided with a traction hole at one end, and the traction cap is internally provided with a containing space, the containing space is provided with an inlet at the other end of the traction cap, and an internal thread matched with the annular step is arranged at the inlet.

[0013] In a possible implementation, the connector shell connector comprises a positioning port arranged on one side of the connector shell, and a positioning boss arranged on the outer lateral wall of the rear sleeve, the positioning boss is located in front of the annular step, and the positioning boss is matched with the positioning port.

[0014] In a possible implementation, a plurality of positioning rings are arranged on the outer lateral wall of the rear sleeve, the positioning rings are located behind the annular step, a spacing is left between the positioning rings, and the crimping sleeve is crimped on the rear sleeve.

[0015] In a possible implementation, the tail sleeve is arranged on the crimping sleeve.

[0016] In a possible implementation, the outer lateral wall of the connector shell is provided with a locking component and an unlocking component, the locking component is used for locking the connector shell and the adapter, the unlocking component is used for unlocking the connector shell and the adapter, the connector shell is internally provided with a mounting hole for containing the pin assembly and the rear sleeve, and a second limiting ring is arranged at the front end of the mounting hole, so that the pin can pass through the second limiting ring and the pin tail handle joint is limited.

[0017] It should be understood that the above general description and the following detailed description are only exemplary and cannot limit the utility model.

[0018] The utility model discloses, can support air blow type pipe through, also can support traction type pipe through, and with connector component integral pipe through when, minimum pipe through section is 4mm, and in the air blow type pipe through process, when the needle assembly hits the pipeline, the needle tail handle sleeve of needle assembly can extend into the through -hole of rear cover, and the spring between needle assembly and rear cover is compressed to carry out the buffer to avoid the needle assembly to hit the injury. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is three -dimensional structure schematic diagram of the air blow traction integrated connector after installing connector shell for the utility model embodiment provides;

[0020] Figure 2 It is the overhead view of the air blow traction integrated connector after installing connector shell for the utility model embodiment provides;

[0021] Figure 3 It is Figure 2 It is the cut structure schematic diagram of A-A in the middle;

[0022] Figure 4 It is three -dimensional structure schematic diagram of the air blow traction integrated connector after removing connector shell for the utility model embodiment provides;

[0023] Figure 5 It is three -dimensional structure schematic diagram of the air blow traction integrated connector after removing connector shell, tail cover for the utility model embodiment provides;

[0024] Figure 6 It is three -dimensional structure schematic diagram of the air blow traction integrated connector after removing connector shell, tail cover, dustproof cap and crimping sleeve for the utility model embodiment provides;

[0025] Figure 7 It is three -dimensional structure schematic diagram of the air blow traction integrated connector after installing traction cap for the utility model embodiment provides;

[0026] Figure 8 It is the front view of the air blow traction integrated connector after installing traction cap for the utility model embodiment provides;

[0027] Figure 9 It is Figure 8 It is the cut schematic diagram of B-B in the middle.

[0028] REFERENCE SIGNS:

[0029] 1. Dust cap; 2. Connector housing; 3. Locking component; 4. Unlocking component; 5. Positioning port; 6. Optical fiber; 7. Tail sleeve; 8. Pin; 9. Pin tail shank connector; 10. Spring; 11. Pin tail shank sleeve; 12. Rear sleeve; 13. Annular step; 14. Positioning ring; 15. Crimping sleeve; 16. Positioning boss; 17. Traction cap; 18. Traction hole; 19. Second limiting ring; 20. First limiting ring. Detailed Implementation

[0030] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0031] like Figures 1-9 As shown, the air-blowing and traction integrated connector includes a pin assembly 8, with a pre-embedded optical fiber inside. The pin assembly 8 includes a pin 8, a pin tail connector 9, and a pin tail sleeve 11 connected in sequence. The pin tail sleeve 11 is riveted to a rear sleeve 12. A spring 10 is provided between the pin tail sleeve 11 and the rear sleeve 12. The rear sleeve 12 is provided with a connector housing 2 connector and a traction cap 17 connector. The rear sleeve 12 is detachably connected to the connector housing 2 via the connector housing 2 connector, and detachably connected to the traction cap 17 via the traction cap 17 connector. A crimp sleeve 15 and a tail sleeve 7 are connected to the tail end of the rear sleeve 12. During traction-type tube insertion, the traction cap 17 is installed on the rear sleeve 12. After the traction rope is tied to the traction cap 17, the connector can be pulled through the pre-embedded pipe. After the pipe is inserted, the traction cap 17 is removed, the connector housing 2 is installed, and the connector housing 2 is plugged into the adapter to complete the fiber optic connection. When performing air-blowing pipe insertion, the traction cap 17 is removed, and the pre-embedded fiber optic cable, the ferrule 8 assembly, the rear sleeve 12, the crimp sleeve 15, and the tail sleeve 7 are connected as a whole and sent into the pre-embedded pipe. High-pressure gas is introduced into the pipe. When the high-pressure air is blown in, the connector travels at high speed and repeatedly hits the pipe bend. At this time, the spring 10 can play a buffering role. In addition, removing the traction cap 17 and the tail sleeve 7 can reduce the length-to-diameter ratio and the equivalent cross-sectional area, so that it can pass through the pre-embedded pipe smoothly.

[0032] Furthermore, the front end of the pin 8 is equipped with a dust cap 1, which is tightly fitted and inserted into the pin 8. The dust cap 1 tightly covers the front end of the pin 8, forming an effective barrier to prevent dust, moisture, grease and other contaminants from entering the interior of the pin 8 or adhering to the surface of the pin 8.

[0033] Specifically, an annular groove is provided on the outer wall of the front end of the dust cap 1 to facilitate insertion and removal. The diameter of the inner cavity of the dust cap 1 is adapted to the outer diameter of the pin 8 so that the dust cap 1 and the pin 8 fit tightly. At the same time, the length of the inner cavity of the dust cap 1 is slightly greater than the length of the pin 8 so that when the dust cap 1 collides with the pre-embedded pipe, the force of the dust cap 1 will not be applied to the tip of the pin 8.

[0034] Further, the ferrule 8, the ferrule handle joint 9 and the ferrule handle sleeve 11 are provided with through holes, which allow the optical fiber to pass through the ferrule 8, the ferrule handle joint 9 and the ferrule handle sleeve 11, and realize the connection with the optical fiber of the other end adapter.

[0035] Specifically, the ferrule 8 is provided with a needle hole, the diameter of which is slightly larger than the diameter of the optical fiber cladding, and the diameter of the through hole in the ferrule handle sleeve 11 is larger than the diameter of the optical fiber sheath. In the assembly process, the optical fiber is first inserted into the ferrule handle sleeve 11, then passes through the ferrule handle joint 9, and finally the end of the optical fiber (the optical fiber without the sheath layer and the optical fiber cladding) is inserted into the needle hole of the ferrule 8.

[0036] Specifically, the ferrule 8 is made of metal, ceramic or plastic, and the end face of the ferrule 8 is ground into a slight spherical surface. After the optical fiber cladding is inserted into the needle hole of the ferrule 8, the optical fiber core is located at the highest point of the slight spherical surface, i.e. the center.

[0037] Specifically, the ferrule handle joint 9 is provided in a D-shaped structure to enable the circumferential positioning of the ferrule 8 assembly.

[0038] Further, the rear sleeve 12 is provided with a through hole in the inside, and the front end inner wall of the rear sleeve 12 is provided with a first limiting ring 20. The ferrule handle sleeve 11 is riveted with the through hole of the rear sleeve 12, so that the ferrule handle sleeve 11 does not separate from the rear sleeve 12. The through hole in the inside of the rear sleeve 12 provides a channel for the optical fiber or the ferrule handle sleeve 11, and the first limiting ring 20 can limit the ferrule handle sleeve 11 after riveting to prevent the ferrule handle sleeve 11 from separating from the rear sleeve 12.

[0039] Specifically, the inner side (far from the front end side of the rear sleeve 12) of the first limiting ring 20 is provided with an inclined surface, so that the ferrule handle sleeve 11 can be limited in cooperation with the first limiting ring 20 after riveting.

[0040] Further, the connecting part of the traction cap 17 includes an annular step 13 provided in the middle of the outer side wall of the rear sleeve 12, and the annular step 13 is provided with external threads for connecting the traction cap 17. The external threads are matched with the internal threads in the inside of the traction cap 17 to realize the firm connection between the two, and in the traction process, the connecting part can effectively disperse the traction force to prevent the connector from deforming or being damaged due to uneven force.

[0041] Further, the traction cap 17 is provided with a traction hole 18 at one end, the traction hole 18 is used to connect traction ropes, traction belts or other traction devices to provide traction force when needed. The traction cap 17 is internally provided with a containing space for containing the pin 8 assembly and the front end of the rear sleeve 12 that need to be pulled. The containing space is provided with an entrance at the other end of the traction cap 17, the entrance allows the pulled object to enter the containing space. The entrance is provided with an internal thread that matches the external thread on the annular step 13.

[0042] Further, the traction cap 17 is provided with an anti-skid notch on the outer side wall to make it easier to twist the traction cap 17.

[0043] Specifically, a flat section is provided at the left end of the traction cap 17, a traction hole 18 is opened in the flat section, a cylindrical cavity is provided inside the traction cap 17 as a containing space, and an opening is provided on the right side of the traction cap 17. An internal thread is provided on the inner wall of the opening.

[0044] Further, the connector housing 2 connecting piece includes a positioning port 5 provided on one side of the connector housing 2 and a positioning boss 16 on the outer side wall of the rear sleeve 12. The positioning boss 16 is located in front of the annular step 13. The positioning boss 16 matches the positioning port 5. When the connector housing 2 is assembled with the rear sleeve 12, the positioning boss 16 is inserted into the positioning port 5 to form a stable connection.

[0045] Specifically, a positioning port 5 is opened on the front side of the connector housing 2. The positioning port 5 communicates with the mounting space inside the connector housing 2. When the rear sleeve 12 is inserted into the mounting space inside the connector housing 2, the positioning boss 16 of the rear sleeve 12 is inserted into the positioning port 5. The positioning boss 16 is located in front of the annular step 13.

[0046] Specifically, the upper and lower parts of the front side of the rear sleeve 12 are provided with a flat structure to enable circumferential positioning when the rear sleeve 12 is inserted into the connector housing 2.

[0047] Further, a plurality of positioning rings 14 are provided on the outer side wall of the rear sleeve 12. The positioning rings 14 are located behind the annular step 13. The plurality of positioning rings 14 are spaced apart. The crimping sleeve 15 is crimped on the rear sleeve 12. During the crimping process, the crimping sleeve 15 is compressed by a special crimping tool and tightly wrapped around the outer side wall of the rear sleeve 12. During the crimping process, the crimping sleeve 15 deforms to form grooves or protrusions that match the positioning rings 14, so that the crimping sleeve 15 is accurately positioned on the rear sleeve 12.

[0048] Further, the tail sleeve 7 is heat-shrunk or elastically fitted on the crimping sleeve 15. A heat gun or other heat source is used to heat the tail sleeve 7. As the temperature rises, the material of the tail sleeve 7 will begin to soften and shrink, tightly wrapping around the crimping sleeve 15 and the surrounding components.

[0049] Further, the outer side wall of the connector shell 2 is provided with a locking part 3 and an unlocking part 4, the locking part 3 is used for locking the connector shell 2 with the adapter, and the unlocking part 4 is used for unlocking the connector shell 2 with the adapter, through the design of the locking part 3 and the unlocking part 4, the quick and stable connection and convenient unlocking of the connector and the adapter are realized, the mounting hole for accommodating the pin 8 assembly and the rear sleeve 12 is arranged in the connector shell 2, and a second limiting ring 19 is arranged at the front end of the mounting hole, so that the pin 8 can pass through the second limiting ring 19 and the pin tail handle joint 9 is limited, therefore, when the pin 8 assembly and the rear sleeve 12 are installed into the connector shell 2, the pin 8 assembly can be limited through the second limiting ring 19, so as to avoid the pin 8 assembly moving forward and separating from the connector shell 2, and at the same time, the pin 8 assembly can move backward, when moving backward, the spring 10 is compressed, and when there is no external force, the pin 8 assembly is re-extended forward under the elastic force of the spring 10.

[0050] The working principle of the application is that when the traction type passes through the embedded pipe, the traction cap 17 is arranged in a matched mode, the traction hole 18 is arranged at the tail end of the traction cap 17, the inner thread is arranged on the inner wall of the opening end of the traction cap 17, and the traction cap 17 is connected with the annular step 13 through the thread, so that the embedded pipe is passed through in the traction mode.

[0051] Alternatively, the traction cap 17 is cancelled, and only the dustproof cap 1, the pin 8 assembly, the rear sleeve 12 and the crimping sleeve 15 are combined to pass the connector through the embedded pipe in the air blowing mode, when the high-pressure air is blown in, the connector runs at high speed and repeatedly impacts the pipeline elbow, at this time, the spring 10 can play a buffering role, and the traction cap 17 and the tail sleeve 7 are cancelled, so that the length-diameter ratio can be reduced, the equivalent cross-sectional area can be reduced, and the embedded pipe can be smoothly passed through.

[0052] The application can support the air blowing type pipe passing and the traction type pipe passing, and when the connector part is integrally passed through the pipe, the minimum pipe passing cross section is 4 mm; and during the air blowing type pipe passing process, when the pin 8 assembly impacts the pipeline, the pin tail sleeve 11 of the pin 8 assembly can extend into the through hole of the rear sleeve 12, the spring 10 between the pin 8 assembly and the rear sleeve 12 is compressed to buffer, so as to avoid the pin 8 assembly from being injured.

[0053] The above is only a specific implementation manner of the application, but the protection scope of the application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the application, which should be covered in the protection scope of the application; in the case of no conflict, the embodiments of the application and the features in the embodiments can be combined with each other. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. A blow-traction integrated connector, comprising a pin assembly, a pre-embedded optical fiber is arranged inside the pin assembly, the pin assembly comprises a pin, a pin tail handle joint and a pin tail handle sleeve connected in sequence, characterized in that, The pin tail handle sleeve is riveted with the rear sleeve, a spring is arranged between the pin tail handle sleeve and the rear sleeve, a connector shell connector and a traction cap connector are arranged on the rear sleeve, the rear sleeve is detachably connected with a connector shell through the connector shell connector, and the rear sleeve is detachably connected with a traction cap through the traction cap connector.

2. The push-pull integrated connector of claim 1, wherein, The pin is provided with a dustproof cap at the front end, and the dustproof cap is tightly inserted with the pin.

3. The push-pull integrated connector of claim 1, wherein, The pin, the pin tail handle joint and the pin tail handle sleeve are internally provided with through holes.

4. The push-pull integrated connector of claim 1, wherein, The rear sleeve is internally provided with a through hole, a first limiting ring is arranged on the inner wall of the front end of the rear sleeve, and the pin tail handle sleeve is riveted with the through hole of the rear sleeve, so that the pin tail handle sleeve is not separated from the rear sleeve.

5. The push-pull integral connector of claim 1, wherein, The traction cap connector comprises an annular step arranged in the middle of the outer side wall of the rear sleeve, and an outer thread for connecting the traction cap is arranged on the annular step.

6. The push-pull integral connector of claim 5, wherein, One end of the traction cap is provided with a traction hole, and the traction cap is internally provided with an accommodation space, and the accommodation space is provided with an inlet at the other end of the traction cap, and an inner thread matched with the annular step is arranged at the inlet.

7. The push-pull integral connector of claim 6, wherein, The connector shell connector comprises a positioning port arranged on one side of the connector shell, and a positioning boss arranged on the outer side wall of the rear sleeve, the positioning boss is located on the front side of the annular step, and the positioning boss is matched with the positioning port.

8. The push-pull integral connector of claim 7, wherein, A plurality of positioning rings are arranged on the outer side wall of the rear sleeve, the positioning rings are located on the rear side of the annular step, a spacing is left between the plurality of positioning rings, and the crimping sleeve is crimped on the rear sleeve.

9. The push-pull integral connector of claim 1, wherein, The tail sleeve is arranged on the crimping sleeve.

10. The push-pull integral connector of claim 1, wherein, Locking components and unlocking components are arranged on the outer side wall of the connector shell, the locking components are used for locking the connector shell and the adapter, the unlocking components are used for unlocking the connector shell and the adapter, the connector shell is internally provided with a mounting hole for accommodating the pin assembly and the rear sleeve, and a second limiting ring is arranged at the front end of the mounting hole, so that the pin can pass through the second limiting ring and the pin tail handle joint is limited.

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